Catalog excerpts
CLIMATE TRANSMITTER PFT28 Measuring temperature and relative humidity with a „singlechip“-sensor Calculation and display of dew point temperature, enthalpy, wet bulb temperature and absolute humidity Digital transmission from sensor to the evaluation electronics Fast response time Exchange ability of sensor without recalibration Alphanumeric LCD-indicator for: temperature, relative humidity, dew point temperature, absolute humidity, wet bulb temperature and enthalpy Analogue outputs 0/2...10 V or 0/4...20 mA Supply voltage 15...30 Vdc or 24 Vac Operational use humidity 0...100 % (transient condensation possible) Operational use temperature -30...+50 °C Plastic housing, protection class IP 54; UL 94 HB Wall-mounted version The transmitter PFT28 converts the measured variables temperature and relative humidity into the measured variables: dew point temperature, absolute humidity, wet bulb temperature and enthalpy. Output 1 supplies the temperature signal while Output 2 can be assigned to one of four other measured variables. The second measured variable is selected by a two-pole DIP switch. Measured variable, measured value and unit are displayed on a two-line alphanumeric display. Two PFT28 versions are available: A room sensor for wall mounting and a duct sensor for installation in a ventilation duct. In both versions, the sensor tube is mounted directly to the chassis. With a jumper, the output signals can be switched from 0/2...10 V to 0/4...20 mA. The device is powered with 15...30 Vdc or 24 Vac. Dimensions (mm) PFT28K as duct sensor Dimensions (mm) PFT28R as room sensor 104 95 Ausgang 2: gewählte Messgröße Connections Output 2: selected measured variable Supply voltage 15...30 Vdc or 24 Vac (±15%) Output 1: 0/2...10 V or 0/4...20 mA Output 2: 0/2...10 V or 0/4...20 mA
Open the catalog to page 1Resolution: Response time: Characteristics: Tolerance: Reproducibility: Measuring ranges: Resolution: Response time: Characteristics: Long-term stability: Tolerance: Reproducibility: Measuring ranges: Special measuring range: Measuring range selection: Housing: Protection class: Features: Storage temperature: Operating temperature: Weight: Connection head: Electrical connection: Weight: Channel sensor Outdoor sensor Room sensor Power supply: Output current: EMC: RoHS: Output 1: TEMPERATURE 14 bit Approx. 20 seconds Linear Standard Sensor: Sensor with narrower tolerance: Approx. 4 seconds...
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